@ARTICLE{Shvai2017-ls,
  title     = "The best {$M$}-term trigonometric approximations of the classes of
               periodic multivariate functions with bounded generalized
               derivative in the space {$L_q$}",
  author    = "Pozharska, K. and (Shvai K.)",
  journal   = "J. Math. Sci.",
  publisher = "Springer Science and Business Media LLC",
  volume    =  222,
  number    =  6,
  pages     = "750--761",
  year      =  2017,
  doi       =  {10.1007/s10958-017-3329-0},
}